TTree::Draw of TRef

[pcanal]

@bozzochet

to print 1024 values (first event, notice the “1” passed as last argument) I have to do t4->Draw("refCalPed[0][0][0].value[0]", "", "", 1). Essentially I have to use four indices, while only two were expected:

This is also expected. You always need to specify all the dimensions that you want to fix. Any dimensions not specified with be implicitly added as a [].

So if you request the plotting of a 4 dimensional entity (compounding all the dimensions all the way) and only specify 2 (i.e. [0][0]) it will be implicitly completed with [] requesting the iteration through all the elements of those dimensions (i.e. [0][0][][])

If you want get a specific elements elements of the inner dimensions for all instances of the other dimensions, you need something like: [][][0][0] which will plot calped[0][0] for all the elements of refCalPed.